Portable universal ground control system



FIG. 1 is a perspective view of a portable universal ground control system;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof.

The broken lines shown in the drawings depict portions of the portable universal ground control system that form no part of the claimed design. 

CLAIM The ornamental design for a portable universal ground control system, as shown and described. 